Essay Hydrogen and Points

959 WordsApr 25, 20134 Pages
1. Identify the functional group or molecule for each of the following. (3 points) 1. COOH -OH 2. COH -OH 3. COH -OH 1. List whether each of the following substances was positive or negative for reducing sugar, as indicated by the Benedict's test. (6 points) 1. corn syrup (1 point) positive 2. table sugar (1 point) positive 3. unknown 1 (1 point) negative 4. unknown 2 (1 point) negative 5. unknown 3 (1 point) positive 6. unknown 4 (1 point) positive 1. List whether each of the following substances was positive or negative for starch, as indicated by using iodine. (7 points) 1. onion juice (1 point) positive 2. water (1 point) negative 3. cornstarch (1…show more content…
lemon juice (1 point) pH 2 4. distilled water (1 point) pH 7 5. baking soda (1 point) pH 8 1. What was the purpose of using water as a sample in some of the tests performed in the lab? (2 points) to have a control. 2. Four unknown samples were included in the lab kit: flax seed meal, potato starch, egg whites, and dried milk. Using the results of the biochemical testing, determine which number corresponds to the correct unknown. (8 points) 1. unknown 1 (2 points) egg whites 2. unknown 2 (2 points) dried milk 3. unknown 3 (2 points) flax seed meal 4. unknown 4 (2 points) potato starch 1. State a commercial use for biochemical testing as performed in this online laboratory. (5 points) face wash! To be able to test what different ingredients within the facial cleanser and how they will effect the areas, and chemicals of the skin composition. 2. Describe the three different types of bonds, providing examples of molecules formed through each type of bond. (3 points) Covalent bond, methane. Ionic bond, table salt. Hydrogen bond, water. 3. What is the difference between a monosaccharide, disaccharide, and a polysaccharide? (3 points) A monosaccharide is a carbohydrate that doesn’t hydrolize. A disaccharide is a group of that yield monosaccharides on hydrolosis. Lastly, polysaccharide is a carbohydrate that contains more than three monosaccharide units per molecule. 4. State three factors
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